 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.expressions;

 import org.eclipse.core.runtime.CoreException;

 /**
  * A variable resolver can be used to add additional variable resolving
  * strategies to an {@link EvaluationContext}.
  *
  * @see org.eclipse.core.expressions.EvaluationContext#resolveVariable(String, Object[])
  *
  * @since 3.0
  */
 public interface IVariableResolver {

     /**
      * Resolves a variable for the given name and arguments. The
      * handler is allowed to return <code>null</code> to indicate
      * that it is not able to resolve the requested variable.
      *
      * @param name the variable to resolve
      * @param args an object array of arguments used to resolve the
      * variable
      * @return the variable's value or <code>null</code> if no variable
      * could be resolved
      * @exception CoreException if an errors occurs while resolving
      * the variable
      */
     public Object resolve(String name, Object [] args) throws CoreException;
 }

